更新1:
O is the centre of a unit circle. OA=1 unit, then A is a point inside / on / outside the circle?
O is the centre of a unit circle. OA=1 unit, the A is a pont inside / on / outside the circle?
回答 (1)
2015-08-20 3:37 am
✔ 最佳答案
A is a point "on" the circumference of the circle.
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原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20150819184308AACicpl